Two-blade knife-switch



W. JAEGER.

TWO BLADE KNIFE SWITCH.

APPLICATION FILED JUNE 14, 1919.

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TWO BLADE KNIFE SWITCH.

APPLICATION FILED JUNE 14, I919.

1,358,554, Patented NW. 9, 1920.

2 SHEETS-SHEET 2.

ummy UNITED STATES WILLIAM JAEGER, OF MENOMONIE, WISCONSIN.

TWO-BLADE KNIFE-SWITCH.

Application filed June 14, 1919.

able others skilled in the art to which it.

appertains to make and use the same, reference being had to theaccompanying draw ings, and to the letters and figures of referencemarked thereon, which form a part of this specification.

This invention relates to new and useful improvements in automaticallyoperated means for opening and closing electrical circuits andcontrolled by clock mechanism, and consists of a simple apparatus ofthis nature so arranged that the circuit may be closed at apredetermined hour and also broken at such an hour as may be desired.

The apparatus is adapted especially for regulating and controllingelectrically heated ovens, cooking ranges and appliances, and forregulating and controlling electric currents for show window lights,electric signs, etc, and consists of a simple and efficient device ofthis nature having various details of construction, combination andarrangement of parts which will be hereinafter fully described, shown inthe accompanying drawings and then specifically defined in the appendedclaims.

My invention is illustrated in the accompanving drawings which, with thenumerals of reference marked thereon, form a part of this application,and in which:

Figure 1 is an elevation of the apparatus.

Fig. 2 is a sectional view through the casing, showing in edge elevationparts of the apparatus.

Fig. 3 is a plan view,and

Fig. 4 is a sectional view.

Reference now being had to the details of the drawings by numerals:

1 designates a casing having binding posts 2, 3, 4 and 5, the two formerof which, 2 and 3, are electrically connected to the terminals 6 and 7.The terminal 6 is connected by electrical wiring 8 with the binding post4, and the terminal 7 is connected through a wire 9 with the bindingpost 5. The circuit closing switch is designated by numeral 10 and ispivotally mounted upon a pin 12 and has Specification of Letters Patent.

Patented Nov. 9, 1920.

Serial No. 304,110.

two blades adapted to be drawn in contact with the terminals 6 and 7through the medium of the coiled spring 13.

In the drawings I have indicated diagrammatically the conventionalmechanism of a clock works having a hand carrying post 14 the handadapted to move over a dial upon the face of the frame. A second dial isdesignated by numeral 16 and has numerals upon one-half thereofdesignating the hours during the A. M. and other numerals designatingthe hours P. M., the two sets of nu- Inerals designating all of thetwenty-four hours of a day. Concentrically disposed relative to the dial16, shown in Fig. 4 of the drawings in section, is the shaft 17 having agear wheel 18 keyed thereto which in turn is adapted to be driven bygear connection with the clock mechanism. Frictionally mounted upon iheshaft 17 is a sleeve 19 having a contracted cross-sectionallynoncircular end, also fitting a similarly shaped central aperture in aring 21, which thus rotates with said sleeve. Said sleeve has an angledpointer 22 bent over the periphery of the dial 16 and is adapted toindicate one or another of the numerals thereof. A gear wheel 23 has ahub portion which is frictionally mounted upon the sleeve 19 and carriesa pivotal trip 24 on the face thereof. The teeth of said gear wheel 23are formed in a laterally extending peripheral flange, as shown clearlyin Figs. 2 and 4 of the drawings, and 25 is a pinion fixed to a shaft 26having a turning handle 27. Said shaft 26 is adapted to have alongitudinal movement to throw the pinion carried thereby into or out ofmesh with the teeth in said gear according as it may be desired to setthe pointer 22 to indicate the predetermined moment the current is to bebroken. An angled pointer 28 is fixed to the gear 23 and is adapted toindicate over one or another of the numerals upon the dial 16, and isadapted to indicate the predetermined moment the circuit will be closed.Said sleeve 19 has an integral gear wheel 29 with a laterally extendingperipheral flange provided with teeth 30, which are adapted to mesh withthe teeth of the pinion 31 fixed to a stem 32 provided with a hand Wheel33 for turning the same. A coiled spring 34 is mounted upon the stem 32and interposed between the wheel 33 and the frame of the mechanismthrough which the stem passes, the purpose of said spring bein tonormall hold the )ii'llOIl out of e: iii mesh with the teetn upon thegear 29.

Pivotally mounted upon a shaft 35 is an angled lever comprising two armsdesig nated respectively by numerals '36 and 37, the latter having alateral projection 37*. Said arm 36 is formed to provide a hook adaptedto engage a shaft 38 pivoted at 38 and guided in a slot 38 in a bracket38 and which shaft passes through a slot 39 in a bar 40, the latterbeing adj ustably held to a link 41 through the medium of the shaft 38passing through the slot 39 and on the end of which shaft a thumb nut 43is screwed. The link 41 is pivotally connected at 44 to the switch 10and is adapted to raise the switch to break the circuit. through themedium of a crank arm 45 to which it is pivoted, and which in turn isfixed to a shaft 46 driven by gear connection with a shaft 47 which isdriven by means of a spring 48.

Fixed to a shaft 49, which in turn is driven by gear mechanism from thespring driven shaft 47, is an'escapement wheel 50, having three radialfingers 51 thereon. An escapement member 52, bent as shown in Fig. 1 ofthe drawings has a disk 53 fixed thereto which is mounted to rock upon apivot 54, and said disk has fixed thereto a plate 55 one end of which isadapted to project into the path of a trip 56 which is mounted upon thegear 29.

In operation, when it is desired to adjust the apparatus to cause thecircuit to be closed at a predetermined moment and designated by thepointer on the face of the dial 16, for the purpose of actuating anyelectrically controlled mechanism, such as a heater for ovens, etc., theangle lever -3637 will be tilted by the trip 24 coming in contact withthe lateral projection 37 upon the angle lever, causing the latter toturn upon its pivot rocking the hook portion of the lever on 43 out ofengagement-withtheshaft 38, as shown bydotted lines in Fig. 1 afterwhich the spring 13 will throw the switch into contact with theterminals 6 and closing the 'circuit- The dial will continue to revolve,it being understood that said dial makes a complete revolution once intwentyfour hours, and when it is desired to break the circuit at apredetermined hour and'indicated by the pointer 22, when the trip 56comes in contact with the plate 55 the latter will tilt as shown bydotted lines in Fig. 1, throwing the escapement member which is fixedthereto out of the path of the fingers 51, and which will permittheshaft 46 to be given a partial rotary movement and through itsconnections with the switch cause the same to be raised andautomatically held in a raised position through the medium of the hookupon the angle lever arm 36 which engages under the shaft 38 it Said bar'40 is raised being understood that the shaft 46 is caused to rotatethrough the influence'of the coiled spring 48 which actuates the shaft-7 having gear connection with a gear wheel upon theshaft 46. V

While I have shown means for opening and closing the circuit, it will beunderstood that the parts may be duplicated should it be desired tocause the circuit to be opened or closed at different intervals or toactuate several circuit closing and breaking devices for the purpose setforth, without departing from the spirit of the invention.

lVhat I claim to be new is:

1. An automatic circuit closing and breaking apparatus, comprising aclock work mechanism, terminals and pivotal spring pressed switch withelectrical connections between the terminals, a shaft having gearconnection with the clock works, and a dial fixed to said shaft andhaving numerals thereon designating the hours of a day, a sleevefrictionally'mounted upon said shaft, a pointer rotating with saidsleeve and movable adjacent to the face of the dial, a gear frictionallymounted upon said sleeve, a pointer and a spring pressed trip mountedupon said gear, means for adjusting the pointers, a pivotal shaftadapted to hold theswitch open, a spring pressed angle lever adapted tobe actuated by said trip .to release the switch Which is closed by thespring attached thereto, and means for opening the switch.

2. An automatic circuit closing and breaking apparatus, comprising aclock work mechanism, terminals and pivotal spring pressed switch withelectrical connections between "the terminals, a shaft having gearconnection with the clock works, and a dial fixed to said shaft andhaving numerals thereon designating the hours of a day, a sleevefrictionally mounted upon said shaft, a pointer rotating with saidsleeve and movable adjacent to the face of the dial, a gear frictionallymounted upon said sleeve, a pointer and a spring pressed trip mountedupon said gear, means for adjusting the pointers, a pivotal shaftadapted to hold the switch open, a spring pressed angle lever adapted tobe actuated by said trip to release the switch which is closed by thespring attached thereto, said sleeve having a gear wheel rotatingtherewith, a spring pressed trip fixed upon the gear which to tates withthe sleeve, a pivotal shaft with connections between the same and saidswitch, a spring actuated shaft with crank connections with said shaftwhich is connected to the switch,-a spring actuated escapement Wheel,and escapement member coperating therewith and actuated by the gearwheelwhich rotates with the sleeve.

3. An automatic circuit closing and break ing. apparatus, comprising aclock work mechanism, terminals and pivotal spring pressed switch withelectrical connections between the terminals, a shaft having gearconnection with the clock works, and a dial fixed to said shaft andhaving numerals thereon designating the hours of a day, a sleevefrictionally mounted u on said shaft, a pointer rotating with said seeve and movable adjacent to the face of the dial, a gear frictionallymounted upon said sleeve, a pointer and a spring pressed trip mountedupon said gear, longitudinally movable shafts having pinion wheels fixedthereto and adapted to engage the teeth of the gears to regulate saidpointers, a pivoted shaft adapted to hold the switch open, a springpressed angle lever adapted to be actuated by said trip to release theswitch which is closed by the spring attached thereto, and means foropening the switch.

4. An automatic circuit closing and breaking apparatus, comprisin aclock work mechanism, terminals an pivotal spring pressed switch withelectrical connections between the terminals, a shaft having gearconnection with the clock works, and a dial fixed to said shaft andhaving numerals thereon designating the hours of a day, a sleevefrictionally mounted upon said shaft, a pointer rotating with saidsleeve and movable adjacent to the face of the dial, a gear frictionallymounted upon said sleeve, a pointer and a spring pressed trip mountedupon said gear, means for adjusting the pointers, a shaft pivoted at oneend, a link fixed to said shaft and having pivotal connection with theswitch, a spring pressed shaft with crank fixed thereto, a slotted barpivotally connected to a pin upon the crank and fastened to said pivotalshaft, and escapement mechanism for permitting said crank shaft torotate at a predetermined hour and actuated by a trip upon the dialcarrying shaft.

In testimony whereof I hereunto afiix my signature.

WILLIAM J AEGER,

